

<!DOCTYPE html>
<html>
<head>
	<title></title>
</head>
<body>

</body>
<script type="text/javascript">
/*
获得以下文件扩展名，将文件名转换成小写添加至数组fileName中，将扩展名转化成大写添加至数组extensieion中
LAUNCHER.BMP
Maps01.MIX
PATCHGET.DAT
PATCHW32_6.DLL
0000040900653.exeddraw.dll
 */
var fileName=[];
var extensieion=[];
var WJ=["LAUNCHER.BMP","Maps01.MIX","PATCHGET.DAT","PATCHW32_6.DLL","0000040900653.exeddraw.dll"];
for (var i = 0; i < WJ.length; i++) {
	fileName.push(WJ[i].toLowerCase());
	extensieion.push(WJ[i].toUpperCase());
}
//fileName.concat(WJ.toLowerCase());
console.log(fileName,extensieion);
</script>
</html>